Finding the right large capacitors

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK
    #1

    Finding the right large capacitors

    I need some 560uF 250V electrolytics to replace some that have failed in a plasma TV. I believe they must be low ESR as it is a secondary side. Although that being said the output current is probably less than 2A on this rail so maybe low ESR aren't required. The originals were Samyoung KMH. I *cannot* find anywhere in the UK that stocks them. The best I got were some Panasonic TS, not low-ESR, from Mouser, in the US. And I'm not really good on spending £12 on shipping from them when they only cost £3 each. (I need 3.) Badcaps.net store doesn't stock them either.

    If I can't get these in the UK would it be possible to arrange to buy these off someone on this forum that could source them from DigiKey, minus the $30 international shipping charge?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.
    Tags: None
    • Jack Crow
      It's a CLASOB!
      • May 2008
      • 823
      • USA
      #2
      Re: Finding the right large capacitors

      Tom,
      I had a similar battle some years back with printer chips for Okidata 320 printers.

      Got turned onto a vendor who for a price (not cheap) was able to sneek them out of Japan around Oki's regular shops.

      I know for a fact there are people in Japan that sell home market stuff outside the country. A friend got an exotic video game board that way for a sumo wresteling arcade game.

      He found that source on Ebay.

      In the case of your caps, who in the UK is authorized factory service for your TV?

      It can't be a unique part, who else makes a similar supply?

      Keep at it, sooner or later you will catch a break.

      Be well
      Jack Crow in Virginia USA
      "You are, what you do, when it counts"
      The Masso

      "Gravity, the quickest way down"
      Mayor John Almafi

      "You ever drop an egg, and on the floor you see it break?
      You go and get a mop so you can clean up your mistake.
      But did you ever stop to ponder why we know it's true?
      If you drop a broken egg you will not get an egg that's new?"

      MC Hawking

        Comment

        • ipman
          Senior Member
          • Jul 2011
          • 159
          #3
          Re: Finding the right large capacitors

          Originally posted by tom66
          I believe they must be low ESR as it is a secondary side.
          Low-ESR caps are used afther high-frequency part of the switching power supply.
          Are you sure that's the way it is? Looks strange.

            Comment

            • digge
              Badcaps Veteran
              • Apr 2006
              • 296
              #4
              Re: Finding the right large capacitors

              Found another thread here where PCBONEZ i think said that chemicon is the same. So here are datasheets for those to easier find replacements.

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Finding the right large capacitors

                  Originally posted by Jack Crow
                  Tom,
                  I had a similar battle some years back with printer chips for Okidata 320 printers.

                  Got turned onto a vendor who for a price (not cheap) was able to sneek them out of Japan around Oki's regular shops.

                  I know for a fact there are people in Japan that sell home market stuff outside the country. A friend got an exotic video game board that way for a sumo wresteling arcade game.

                  He found that source on Ebay.

                  In the case of your caps, who in the UK is authorized factory service for your TV?

                  It can't be a unique part, who else makes a similar supply?

                  Keep at it, sooner or later you will catch a break.

                  Be well
                  Jack Crow in Virginia USA
                  I have contacted eBay sellers with no luck thus far.

                  The TV is a Thomson Wysius 42WM02L, a 42" plasma TV. It is essentially an LG inside. However a new power supply will set me back £100+.

                  Originally posted by ipman
                  Low-ESR caps are used afther high-frequency part of the switching power supply.
                  Are you sure that's the way it is? Looks strange.
                  Yes, these are on the secondary side. They filter the "Vs" bus, which runs at around 190V. There are some primary side capacitors that filter the mains, these are 220u/450V x 3 plus a 100u/450V for the standby supply.
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Finding the right large capacitors

                      Originally posted by digge
                      Found another thread here where PCBONEZ i think said that chemicon is the same. So here are datasheets for those to easier find replacements.
                      Thanks for the link - didn't realise Samyoung were copying the series off Chemicon. Interesting, I may be able to source these easier.
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • digge
                          Badcaps Veteran
                          • Apr 2006
                          • 296
                          #7
                          Re: Finding the right large capacitors

                          Originally posted by tom66
                          Thanks for the link - didn't realise Samyoung were copying the series off Chemicon. Interesting, I may be able to source these easier.
                          I just happened to stumble across the comment from PCBONEZ over here
                          https://www.badcaps.net/forum/showthread.php?t=15747

                            Comment

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